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(急需) 國中一上數學問題
Dec 18th 2013, 14:08

當攝氏溫度為x度 ，華氏溫度為（５分之９ｘ＋３２）度
則當攝氏溫度唯３０度時華氏溫度為多少
9*30/5+32=54+32=86

（-５）* 3x * 2=-30x

9y除(　-　二分之三)=-2/27y
9y除以(　-　二分之三)=9y*(-2/3)=-2*3y=-6y

-９－６x+12=-6x+3

(2y-5)X(-3)=-6y+15

-5(2x+1)除4=4/(-10x-5)
-5(2x+1)除以4=(-10x-5)/4

-3(-4x-12)+(1-x)=12x+36+1-x=11x+37

4x-[5x-3(2x-1)]-3=4x-5x+3(2x-1)-3=4x-5x+6x-3-3=5x-6

三分之-x+4 － 二分之2x-1=2(-x+4)/3*2-3(2x-1)/2*3=(-2x+8-6x+3)/6
=(-8x+11)/6

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